ASUS is launching the Prime AP304 ARGB, a new PC case for DIY builders who want to show off their hardware rather than hide it. It is now available for 149.90 euros in Germany, Austria, and Switzerland, initially in black; a white version will follow in the coming weeks. The centerpiece is a curved glass front panel that wraps around the front and left side, combined with four pre-installed ARGB fans and support for graphics cards up to 420 mm in length.
In a nutshell: The ASUS Prime AP304 ARGB is an ATX case with a curved tempered glass panel, space for graphics cards up to 420 mm, and four pre-installed MR120 ARGB fans with Aura Sync connectivity. Sales in the DACH region will begin on September 8, 2026, at a price of 149.90 euros, initially available only in black.
Launch Date, Price, and Availability
According to an official announcement from ASUS, the Prime AP304 ARGB will be available in Germany, Austria, and Switzerland starting September 8, 2026. The manufacturer’s suggested retail price is 149.90 euros or francs, including VAT. Buyers currently have only the black version to choose from; a white version is expected to follow shortly.
ASUS had already announced the case internationally at the end of July as the Prime AP304, though at that time no price or availability details were provided. With this market launch, the DACH region will now receive the ARGB version with four additional fans.
Design: Curved Glass Instead of Sharp Edges and Corners
The most striking feature of the case is the continuously curved glass front, which, according to ASUS’s official product page, is tempered in a five-step manufacturing process and transitions seamlessly from the front to the left side without any visible seams. The result: a panoramic view of the motherboard, graphics card, and cooling system without the need for a separate side window. ASUS internally refers to this as a “floating chamber,” which visually separates the interior from the outer shell.
To ensure that the large glass panel doesn’t compromise cooling, ASUS has incorporated a patented ventilation opening in the lower section. Up to three fans at the bottom draw fresh air from outside directly under the graphics card, rather than recirculating the already warm air from inside the case. For installing the graphics card itself, there’s a tool-free, patented locking mechanism on the slot bracket, as well as a reinforced bracket that can be screwed in place to prevent heavy cards from sagging.
Technical Specifications of the ASUS Prime AP304 ARGB
| Specifications | Value |
|---|---|
| Form Factor | ATX, Micro-ATX, Mini-ITX |
| Dimensions (W × H × D) | 240 × 535 × 450 mm |
| Weight | 11.5 kg |
| Materials | Steel, plastic, tempered glass |
| Max. graphics card length | 420 mm |
| Max. CPU cooler height | 175 mm |
| Max. power supply length | 200 mm |
| Top radiator | 120 / 240 / 360 mm |
| Fan slots | Top: 2×140 mm or 3×120 mm, Side: 3×120 mm, Bottom: 3×120 mm, Rear: 1×120 mm |
| Pre-installed fans | 3× ASUS MR120 (intake) + 1× MR120 (exhaust), ARGB |
| Drive bays | 1× 3.5″ or 2.5″ |
| Expansion slots | 7 |
| Cable management | 33 mm of space behind the motherboard tray |
| I/O panel | 1× USB-C (20 Gbit/s), 2× USB-A (5 Gbit/s), 1× combo audio jack |
| Colors | Black (available), White (coming soon) |
With space for 360 mm radiators at the top, 420 mm-long graphics cards, and ATX motherboards, the AP304 ARGB is clearly aimed at users who want to build a powerful gaming or workstation setup, not at those seeking a silent build or ITX minimalists. The 33 mm of space in the cable channel is sufficient for proper cable management even with thicker power supply cables, and the color-coordinated internal cables (black or white, depending on the case variant) are designed to further ensure a tidy appearance behind the front panel.
ARGB Lighting and Aura Sync Connectivity
The case earns the “ARGB” designation thanks to four pre-installed MR120 fans with addressable RGB lighting, as well as an additional integrated light strip inside the case. All lighting effects can be synchronized via ASUS Aura Sync with other compatible components such as the motherboard, graphics card, or RAM. Those who don’t need the lighting or are looking for a more affordable model can opt for the standard Prime AP304 version instead, which retains the light strip but does without the four ARGB fans. For the DACH region, ASUS has so far announced only the ARGB variant.
How does the AP304 ARGB fit into ASUS’s Prime series?
Anyone who’s ever looked inside an ASUS Prime AP201 will recognize a familiar basic design philosophy in the AP304 ARGB: lots of glass, a tidy interior, and a focus on aesthetics. While the AP201 is designed as a compact Micro-ATX case, the AP304 ARGB is a significant step up in size and is aimed at ATX systems with greater cooling requirements and more room for expansion.
Conclusion
With the Prime AP304 ARGB, ASUS caters to a target audience that prioritizes aesthetics when building a PC: plenty of visible glass, coordinated lighting, and a clean layout for photos and livestreams. Technically, the case isn’t just a showpiece—the additional bottom ventilation for the graphics card and the ample radiator mounting spaces show that ASUS hasn’t sacrificed cooling for aesthetics. Initial hands-on tests will reveal whether the curved glass front proves durable in everyday use, once test units become available. At 149.90 euros, the AP304 ARGB is priced in the upper mid-range of ATX cases, competing directly with models featuring a similar amount of glass and pre-installed ARGB fans.
